An Analysis of Gas Metal Arc Welding Using the Lyapunov Exponent
| Autor: | Yan Xiaocheng, Li Yan, Zhang Qiang, Li Zhiyong, Tirumalai S. Srivatsan |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Mathematics::Complex Variables Mechanical Engineering Process (computing) Mechanical engineering Lyapunov exponent Welding Mathematics::Geometric Topology Stability (probability) Industrial and Manufacturing Engineering Physics::Geophysics Statistics::Computation law.invention Gas metal arc welding symbols.namesake Nonlinear system Computational Technique Welding process Mechanics of Materials law symbols Physics::Accelerator Physics General Materials Science |
| Zdroj: | Materials and Manufacturing Processes. 28:213-219 |
| ISSN: | 1532-2475 1042-6914 |
| DOI: | 10.1080/10426914.2012.746705 |
| Popis: | The characteristics of chaos are unique to the technique of gas metal arc welding (GMAW), which can be safely classified as being a nonlinear process. In this article, salient aspects relevant to the development and use of computational technique to accurately calculate the maximum Lyapunov exponent of the welding processes for different parameters is presented and discussed. The maximum Lyapunov exponent is then used to evaluate stability of the welding process while concurrently aiding in the selection of the welding parameters. Careful analysis of the results reveals overall chaos to exist in the gas metal arc welding process for the different droplet transfer modes. Overall stability of the welding process is related to the chaos that is generated and exists. The maximum Lyapunov exponent can be safely used as a valid criterion for evaluating the stability of the welding process. This aids in the selection of an optimized welding parameter for the welding process to form a weld bead that has both qual... |
| Databáze: | OpenAIRE |
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